杭電計算機筆試題

　　第一題是:一個長整型的數(shù),從低位起取出奇數(shù)位組成一個新的數(shù)輸出。

　　第二題是杭電acm1002題。

　　a + b problem ii

　　problem description

　　i have a very simple problem for you. given two integers a and b, your job is to calculate the sum of a + b.

　　input

　　the first line of the input contains an integer t(1<=t<=20) which means the number of test cases. then t lines follow, each line consists of two positive integers, a and b. notice that the integers are very large, that means you should not process them by using 32-bit integer. you may assume the length of each integer will not exceed 1000.

　　output

　　for each test case, you should output two lines. the first line is "case #:", # means the number of the test case. the second line is the an equation "a + b = sum", sum means the result of a + b. note there are some spaces int the equation. output a blank line between two test cases.

　　sample input

　　2

　　1 2

　　112233445566778899 998877665544332211

　　sample output

　　case 1:

　　1 + 2 = 3

　　case 2:

　　112233445566778899 + 998877665544332211 = 1111111111111111110

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